Obverse

Reverse

20 Francs

Monaco 20 Francs Prince Rainier III

Monaco · 1950

A golden-hued coin featuring the left-facing profile of Prince Rainier III on the obverse and the Grimaldi coat of arms on the reverse.

Country: Monaco
Year: 1950
Denomination: 20 Francs
Metal: Aluminum-Bronze

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Overview

A golden-hued coin featuring the left-facing profile of Prince Rainier III on the obverse and the Grimaldi coat of arms on the reverse.

Historical significance

This coin was minted during the early reign of Prince Rainier III, who ascended the throne in 1949. It represents the post-WWII monetary system of the Principality, which was closely linked to the French Franc.

Obverse (front)

Head of Prince Rainier III facing left. Legend: 'RAINIER III PRINCE DE MONACO' with the date '1950' at the bottom. Designer signature 'G.P. PIERRE' is visible.

Reverse (back)

The crowned coat of arms of the Grimaldi family flanked by '20' and 'FRS'. Legend at the bottom: 'DEO JUVANTE' (With God's Help).

Estimated value

$1.00-$3.00 in circulated condition, $10.00-$25.00 in Mint State (UNC)

What drives this coin's value

The primary value factor is the preservation of original luster. Because aluminum-bronze is a soft alloy, coins without heavy scratches or 'fingernail' marks command a premium.

Grade assessment

Extremely Fine (XF). Most details are sharp, but there is noticeable surface wear and 'bag marks' on the prince's cheek and the fields.

Mintage & rarity

1,000,000; relatively common but harder to find in high grades.

Authenticity & counterfeit red flags

Counterfeits of this specific date are rare due to its low value, but check for soft details or mushy lettering which may indicate a cast fake.

Notable varieties & errors

No major die varieties are widely recognized for this year, though some exist with slightly different placement of the mint marks.

Similar coins

Similar to the French 20 Francs (G. Guiraud type) of the same era, which shares similar metal composition and size but different imagery.

Care & preservation

Aluminum-bronze is prone to spotting and oxidation. Store in a cool, dry place within non-PVC flips. Avoid cleaning as it will remove the original luster and decrease value.

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Overview

Historical significance

Obverse (front)

Reverse (back)

Estimated value

What drives this coin's value

Grade assessment

Mintage & rarity

Authenticity & counterfeit red flags

Notable varieties & errors

Similar coins

Care & preservation

Other monaco coins

Learn about Monaco 20 Francs Prince Rainier Iii in the encyclopedia